@phdthesis{Becker2008,
  author      = {Nikola Maria Becker},
  title       = {Zur Problematik der Populationsimmunit{\"a}t von viralen, impfpr{\"a}ventablen Erkrankungen am Beispiel Masern und Mumps},
  type        = {doctoralthesis},
  pages       = {138},
  school      = {Universit{\"a}tsbibliothek Johann Christian Senckenberg},
  year        = {2008},
}